Healing Crystal Stone Necklace Life Wire Wrapped Teardrop Crystals Pendant Necklaces Natural Reiki Spiritual Quartz Gemstone Jewelry for Women Girls Specification: Necklace Chain: 23.6 inch(60cm)adjustable. Crystal Pendant: 1.37*0.98 inch (35mm*25mm). Weight: about 17g each. Material: natural crystals stone & alloy. How to protect your crystal necklace: 1. Crystal necklaces should not be placed in exposed or humid places for a long time. Crystal necklaces worn abnormally should be stored in special storage boxes or sealed jewelry bags. 2. Attention: When doing housework, bathing, washing hair, encountering chemicals in detergent/shampoo, swimming in swimming pools or in the sea, soaking in hot springs, strenuous exercise/salt water in sea water, chlorine water in swimming pools will affect crystals jewelry has a bad effect. If you have any questions about the crystal necklaces you bought. You can contact us 24 hours, and we will provide you with a professional answer.